Home / 20,915,917.80-31,436,862.30-18,144,551.40

Finding the Fourth Proportional to 20,915,917.80, 31,436,862.30 and 18,144,551.40

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Solution

The fourth proportional to 20,915,917.80, 31,436,862.30 and 18,144,551.40 is: 27,271,467.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,915,917.80 : 31,436,862.30 = 18,144,551.40 : x
  2. Step 2: Convert to fraction form
    20,915,917.80/31,436,862.30 = 18,144,551.40/x
  3. Step 3: Cross multiply
    20,915,917.80x = 31,436,862.30 × 18,144,551.40
  4. Step 4: Simplify right side
    20,915,917.80x = 570,407,763,857,072.12
  5. Step 5: Solve for x
    x = 570,407,763,857,072.12/20,915,917.80
  6. Step 6: Final answer
    x = 27,271,467.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.